Hydrogen bonds in protic ionic liquids and their correlation with physicochemical properties |
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| Authors: | Miran Muhammed Shah Kinoshita Hiroshi Yasuda Tomohiro Susan Md Abu Bin Hasan Watanabe Masayoshi |
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| Institution: | Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan. |
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| Abstract: | The temperature dependence of the N-H proton chemical shift in protic ionic liquids (PILs) and FT-IR spectra of the N-H bonds indicated the presence of strong hydrogen bonds between the protonated cation and the anion, depending on the ΔpK(a) of the constituent acid and base, and their successive breaking with temperature, which may explain the characteristic properties of PILs such as relatively low ionicity and its decrease with temperature. |
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